Sheet-metal fireproof stud for plastered partitions.



No. 865,109. PATENTED SEPT. 3, 1907. G. H. KNAPP. SHEET METAL PIRBPROOF STUD FOR PLASTERED PARTITIONS.

APPLICATION FILED APB.191906.

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UNITED AE LQ T O FI E,

or CHICAGO, ILLINOIS, ASSIGNOR 'ro' KNAPP Enos; MANUFACTURING oonrmr; A CORPORATION or ILLINOIS.

r'ranraoor STUD PLLSTIRID PABTITIOKS.

whey nit may-mum: Be it known that I, Camus H. Krurr, a citizen of the United States, and a resident of Chicago, in the vention, which will enable others skilled in the art to which it appertains'to fully understand.

My invention relates to improvements in building studs, and has especial reference to sheet metalstuds for fireproof partitions and other structures.

One. of the objects of my invention is to produce a strong, durable and efficient stud, of the character described, by forming the mine from sheet metal blanks, of such configuration as to produce the greatest strength against lateral resistance, consistent with the small quantity of metal included in its composition.

Another object of my invention is to provide cheap, efficient and reliable means for securing the metal fabrictomid studs oi-beams.

Other and further objects of my invention will become apparent to persons skilled in the art from the drawing and the description hereinafter contained.

- In the Figure 1 is an elevation showing the front view of the stud, with the strengthening bead, or rib, facing the observer. Fig. 2 is a similar view shbwing the reverse side of the stud. Fig'. 3 is a similar view showing metal lathing attached to either edge or flange of the stud. Fig. 4 is a view of a'modification to that shown as Fig. 1,.with a rounding head or rib insteadofasquarecorneredbead. Fig.5isasimilarview showing the. interior of the structure. Fig. 6 is a view of the modification showing the metal lathing fabric and the means employed for its attachment.

In all of the views the me reference characters refer always to similar parts. 7

It is generally known to persons familiar with the art, that heretofore, sheet metal studs upon which metal lath and plaster have been supported, in order that they should be strong enough to hold the lath and plaster in position, and to sufficiently resist lateral pressure, have been made of sheet metal of relatively heavy gage. The heavy gage stock involves the use of more powerful formingv pm, and other, machinery, and a great weight of material, thus increasing the cost of the article of equal strength when compared with the structure herein exemplified. To overcome these and other objections to a large extent, I have produced a structure in which a strengthening rib is pressed or otherwise formed, as an integral part of the device, thereby permitting the use of a'lighter gage metal without reducing the strength of the stud.

The stud, as a whole, indicated by 10', is pressed or otherwise formed of a single piece of sheet metal, such Specification of Letters Patent. Application filed A r-119.19. Serial Ioamsn.

rouse-d Sept. s, 1007.

as soft steel, iron or the like, and consists of flanged sides 11 and 12, the face l3l3 and a central rib or head 14 and 14. 'Therib or head, 14l4' gives great bearing strength to the structure and enables it to resist considerable lateral pressure with very slight deflection. The bead is shown premed into the central faceofthestructuretopreservethesymmetryofits appearance, but it is evident that it could be located on either side of the longitudinal center of theface, or otherwise located without materially changing the character or value of the rib for the purpose intended. I have shown a single modification for the purpose of indicating only one of the forms which my stud may take, and not as the'only modification of which it is susceptible. For instance, the stud may be a plurality of ribs of suitable form, suchas a corrugated structure, and many other variations may be made, and all in which the strengthening rib appears to increase the lateral strength of the stud, will fall within the terms and spirit of my invention. 7

Perforations 15, 15 are made at suitable intervals through the walls of the structure, through which to thread thewires, by means of which the metal fabric or lathingmay be attached. The apertures 15 are preferably made at the juncture of the face 13, and the lateral flanges 11 and 12 respectively, or through the walls of the bead 14l4 or both, as shown at 15. The metal fabric, or lathing l6, 16, isattached to the studs, on either-or both of the sides, as shown in Fig. 3, or to the rib 14 or 14 as shown in 6. Soft tie wire, of suitable size, such as annealed steel tie wire, 17-17 is threaded and laced the meshes of the fabric 16 and the perforations 1.5, made through the walls of thestud structure, and then firmly and tightly twisted and tied and bent .owriinto near ap proximation with the face of the lath structure.

By making'the perforations in the base of the flange,

or at the points of juncture with the flange and the face,

and the bead and face, the structure is thus attenuated at these points, and the material 6: which the stud is composed is more easily contorted in the process of forming up the stud, and the wires are more easily and readilythreaded, the walls approaching the perforations serving as guides.

Where the structure is to be used in partitions, in which plastered walls are to be supported upon each side of the stud, the lathing is preferably attached to I both lateral sides, as shown in Fig. 3. In constructions wherein the device is used as a fun'ing strip or the like, the lathing may be attached, as shown in Fig. 6. Obviously the attaching wires may be first tied through the perforations inthe stud andsubsequently threaded and desire to secure by Letters Patent, 0f the United States, is:

1. metal siud formed of a single sheet of metal, having a front face member and side members at angles thereto, and a longitudinal strengthening rib formed in and projecting in front of said face member.

2. A metal stud formed of a single sheet of metal having a front face member and side members at angles thereto. and a longitudinal rib formed in and projecting in front of the fare member, having perforations for the reeeptlon of fastening devices.

It. A metal lathing stud formed of a single sheet of metal. having a front face member and side members at angles thereto. and a longitudinal rib formed in and projecting in front of said face member, having perforations for tie wires by which to secure iathing fabric thereto, and tie wires taking through said perforations.

4..A metal lathing stud formed of a single strip of metal, having a front face member, a'strengthening rib projecting from the front of said face member, side members extending backward and at angles thereto, said structure provided with perforations at the juncture of said rib and face member through which to secure attaching devices.

5. A metal lathing stud or strip formed of a single sheet of metal. comprising a face, two laterally flanged sides at substantially right angles thereto, having a strengthening rib formed in said face. projecting in front and extending longitudinally thereof CHARLES H. KNAPP.

Witnesses: Gannon S. KNAPP, H. J. Hnnzoo. 

